When he won at Shukai, he flat out admit that Riboku out did him strategically, despite him winning.
To him in-character he lost due to the fact Shibashou was a mystery, and in the loss he thinks he found Riboku's weakness thus he's now confident that he'd win.
I think Ousen is the last character to "cope".

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@Owl Ki @TheKnightOfTheSea I'm quitting Kingdom if this ends up being the case.
Kanki: Can't use actual tactics
Riboku: Can't read bad tactics
And knowing HARA after the Kanki shit... Man
@Ou Zen I pray to the lord your theory isn't right.